63404891348 has 6 divisors (see below), whose sum is σ = 110958559866. Its totient is φ = 31702445672.

The previous prime is 63404891339. The next prime is 63404891357. The reversal of 63404891348 is 84319840436.

It is an interprime number because it is at equal distance from previous prime (63404891339) and next prime (63404891357).

It can be written as a sum of positive squares in only one way, i.e., 52215906064 + 11188985284 = 228508^2 + 105778^2 .

It is a junction number, because it is equal to n+sod(n) for n = 63404891296 and 63404891305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7925611415 + ... + 7925611422.

It is an arithmetic number, because the mean of its divisors is an integer number (18493093311).

Almost surely, 2^63404891348 is an apocalyptic number.

It is an amenable number.

63404891348 is a deficient number, since it is larger than the sum of its proper divisors (47553668518).

63404891348 is a wasteful number, since it uses less digits than its factorization.

63404891348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15851222841 (or 15851222839 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 50.

The spelling of 63404891348 in words is "sixty-three billion, four hundred four million, eight hundred ninety-one thousand, three hundred forty-eight".